1100021012023 has 4 divisors (see below), whose sum is σ = 1102561476688. Its totient is φ = 1097480547360.

The previous prime is 1100021012017. The next prime is 1100021012059. The reversal of 1100021012023 is 3202101200011.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1100021012023 is a prime.

It is a super-2 number, since 2×1100021012023² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1100021011994 and 1100021012012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1100021012093) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1270231683 + ... + 1270232548.

It is an arithmetic number, because the mean of its divisors is an integer number (275640369172).

Almost surely, 2^{1100021012023} is an apocalyptic number.

1100021012023 is a deficient number, since it is larger than the sum of its proper divisors (2540464665).

1100021012023 is an equidigital number, since it uses as much as digits as its factorization.

1100021012023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2540464664.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 1100021012023 its reverse (3202101200011), we get a palindrome (4302122212034).

The spelling of 1100021012023 in words is "one trillion, one hundred billion, twenty-one million, twelve thousand, twenty-three".